Lamp stand



FIG. 1 is a front perspective view of the novel lamp stand, with a lamp shade shown in broken lines for purposes of illustration only and forming no part of the claimed design;

FIG. 2 is a top plan view thereof;;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side elevation view thereof and the left side elevation view is identical but reversed; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a lamp stand, as shown and described. 